The key to communicating visually is finding ubiquitous visual symbols that need no verbal explanation.

Most research in cognitive science explores how we see things but little research is done on how we understand what we see.

Understanding is the ultimate test of how good your visualization is. So how can you make people understand? Show something familiar and analogize. If you know nothing else about visualization but pick the right analogy you are more than half way there. This is what a professional designer does – and there is no substitute for analogies.